Women always be changing their hair. It’s a maxim you can set your watch to. And celebrity ladies are no different. In fact, whether it’s for a role, because of a breakup, or simply because their agent told them putting blue streaks in their locks might garner them an extra bit of press (looking at you, Lauren Conrad), famous ladies are just as guilty as the rest of us of making impetuous hair moves. After the jump, we review some of the big hair changers so far this year — women who have gone from long to short, from short to long, from blonde to red and right back again. And don’t forget to tell us whose hair you covet and who you think should probably be sporting a paper bag over their head these days.